en Cuevana 3. Our Sacred Obligation recounts the history of the Yurok Tribe’s struggle against the colonization of the Klamath River, which has sustained them since time immemorial. A land reclamation project and a series of dams have brought the Klamath River salmon populations to the brink of extinction. But the Yurok are fighting back. Propped up by their ancestors, and the recent success of the Lower Elwha Klallam Tribe on the Elwha River, the Yurok are using their sovereignty to fulfill their sacred obligation to bring the dams down and restore the river.